I have an Ubuntu server running 2 docker containers one is running Jenkins and the other one is running Sonarqube. My school has a private gitlab server from this server I want to create an webhook to my Jenkins to trigger a build but the following error is coming up.. And I Don't know what is going on...  Both port forwarded via router using the following ports: jenkins xx.xx.xx.xxx:8080 sonarqube xx.xx.xx.xxx:8090 Getting the following error when testing the webhook using the by jenkins provided url to trigger: http://xx.xx.xx.xxx:8080/project/some_project  Runned docker container with following command: docker run -d -p 8080:8080 -p 50000:50000 --name jenkins jenkins/jenkins:latest The server is hosted at my home and accesable from outside this network